-
公开(公告)号:US08389762B2
公开(公告)日:2013-03-05
申请号:US12812258
申请日:2009-01-13
申请人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
发明人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
IPC分类号: C07C57/065 , C07C57/07
CPC分类号: C07C51/06 , B01D3/105 , B01D17/0214 , C07C51/48 , C07C57/04
摘要: The present invention relates to a process for purifying methacrylic acid, wherein the reaction mixture obtained by a reaction of methacrylamide with water is cooled by mixing with an aqueous medium and then passed into a phase separator.The present invention further describes a system for performing the process according to the invention.
摘要翻译: 本发明涉及一种纯化甲基丙烯酸的方法,其中通过与甲基丙烯酰胺与水的反应获得的反应混合物通过与水性介质混合而冷却,然后通入相分离器。 本发明还描述了一种用于执行根据本发明的方法的系统。
-
公开(公告)号:US20120004460A9
公开(公告)日:2012-01-05
申请号:US12864985
申请日:2009-01-13
申请人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
发明人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
IPC分类号: C07C57/065 , B01J19/00
摘要: The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.
摘要翻译: 本发明涉及通过使甲基丙烯酰胺与水反应生产甲基丙烯酸的方法,其中所述反应在管式反应器中连续进行,并且在所述管式反应器内的反应混合物的流动方向上存在压差。 此外,本发明公开了一种用于实施本发明的方法的设备。
-
公开(公告)号:US08575388B2
公开(公告)日:2013-11-05
申请号:US12864985
申请日:2009-01-13
申请人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
发明人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
IPC分类号: C07C57/065
摘要: The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.
摘要翻译: 本发明涉及通过使甲基丙烯酰胺与水反应生产甲基丙烯酸的方法,其中所述反应在管式反应器中连续进行,并且在所述管式反应器内的反应混合物的流动方向上存在压差。 此外,本发明公开了一种用于实施本发明的方法的设备。
-
公开(公告)号:US20100314239A1
公开(公告)日:2010-12-16
申请号:US12812258
申请日:2009-01-13
申请人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
发明人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
CPC分类号: C07C51/06 , B01D3/105 , B01D17/0214 , C07C51/48 , C07C57/04
摘要: The present invention relates to a process for purifying methacrylic acid, wherein the reaction mixture obtained by a reaction of methacrylamide with water is cooled by mixing with an aqueous medium and then passed into a phase separator.The present invention further describes a system for performing the process according to the invention.
摘要翻译: 本发明涉及一种纯化甲基丙烯酸的方法,其中通过与甲基丙烯酰胺与水的反应获得的反应混合物通过与水性介质混合而冷却,然后通入相分离器。 本发明还描述了一种用于执行根据本发明的方法的系统。
-
公开(公告)号:US20100331572A1
公开(公告)日:2010-12-30
申请号:US12864985
申请日:2009-01-03
申请人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
发明人: Udo Gropp , Stefanie Sohnemann , Guido Protzmann , Thomas Mertz
IPC分类号: C07C57/065 , B01J19/00
摘要: The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.
摘要翻译: 本发明涉及通过使甲基丙烯酰胺与水反应生产甲基丙烯酸的方法,其中所述反应在管式反应器中连续进行,并且在所述管式反应器内的反应混合物的流动方向上存在压差。 此外,本发明公开了一种用于实施本发明的方法的设备。
-
公开(公告)号:US20110313195A1
公开(公告)日:2011-12-22
申请号:US13254280
申请日:2010-03-03
申请人: Bardo Schmitt , Wolfgang Klesse , Martina Ebert , Dirk Broell , Guido Protzmann , Joachim Knebel , Thomas Kehr , Hans-Gerhard Stadler , Gerhard Koelbl , Benedikt Laux
发明人: Bardo Schmitt , Wolfgang Klesse , Martina Ebert , Dirk Broell , Guido Protzmann , Joachim Knebel , Thomas Kehr , Hans-Gerhard Stadler , Gerhard Koelbl , Benedikt Laux
IPC分类号: C07C231/02
CPC分类号: C07C231/02 , Y02P20/582 , Y02P20/584 , C07C233/38
摘要: The invention relates to a process for continuously preparing N-alkyl(meth)acrylamides by reacting alkyl (meth)acrylates with high-boiling amines. A catalyst activation and specific workup technique achieve product qualities which have not been achieved to date. In addition, very high space-time yields and overall yields can be achieved.
摘要翻译: 本发明涉及通过使(甲基)丙烯酸烷基酯与高沸点胺反应来连续制备(甲基)丙烯酰胺的N-烷基酯的方法。 催化剂激活和具体的后处理技术实现迄今尚未实现的产品质量。 此外,可以实现非常高的时空产量和总产量。
-
公开(公告)号:US20100280205A1
公开(公告)日:2010-11-04
申请号:US12745703
申请日:2008-09-29
申请人: Joachim Knebel , Ralf Merbach , Guido Protzmann , Klaus Gottmann , John Hirsh , Gerold Schmitt , Dieter Tessmer , Wilhelm Karnbrock , Wolfgang Klesse , Volker Kerscher
发明人: Joachim Knebel , Ralf Merbach , Guido Protzmann , Klaus Gottmann , John Hirsh , Gerold Schmitt , Dieter Tessmer , Wilhelm Karnbrock , Wolfgang Klesse , Volker Kerscher
IPC分类号: C08F120/12 , C07C69/54
CPC分类号: C07C67/03 , C08F20/18 , C08F120/12 , C07C69/54
摘要: Process for preparing (meth)acrylates of the formula (I) CH2═C(R1)—CO—O—R2 (I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2═C(R1)—CO—OR3 (II) with an alcohol of the formula (III) HO—R2 (III) in the presence of an amount of a suitable catalyst which catalyses the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.0 l/kg, measured in litres of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25° C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.
摘要翻译: 制备式(I)的(甲基)丙烯酸酯的方法,其中R 1是氢或甲基,R 2是饱和或不饱和的,直链或支链的脂族或环状的 具有6至22个碳原子的烷基或(C 6 -C 14) - 芳基 - (C 1 -C 8) - 烷基; 通过使式II CH 2 = C(R 1)-CO-OR 3(II)的(甲基)丙烯酸酯与式(III)的醇HO-R 2(III)在一定量的合适的催化剂存在下反应, 催化反应和一定量的酚聚合抑制剂或两种或多种酚聚合抑制剂的组合,其足以抑制不期望的聚合; 反应是通过输入或引入反应混合物中进行的,所述反应混合物是由一定量的氧气或足够抑制不期望的聚合的氧气混合物的反应而产生的,并且该方法的特征在于特定的总氧气输入量小于或等于 至1.0l / kg,以公斤式(I)的(甲基)丙烯酸酯计,氧气的导入量在25℃,压力为101 325帕斯卡时计算。 所得到的(甲基)丙烯酸酯可以令人惊奇地加工成特别高分子量的乳液聚合物,例如非常适合用作矿物油提取中的阻流剂。
-
公开(公告)号:US08686181B2
公开(公告)日:2014-04-01
申请号:US12667538
申请日:2008-05-08
申请人: Joachim Knebel , Thorben Schuetz , Guido Protzmann , Harald Trauthwein , Guenther Lauster , Thomas Kehr , Gerhard Koelbl , Guenter Westhaeuser
发明人: Joachim Knebel , Thorben Schuetz , Guido Protzmann , Harald Trauthwein , Guenther Lauster , Thomas Kehr , Gerhard Koelbl , Guenter Westhaeuser
IPC分类号: C07C67/03
摘要: The present invention relates to a process for preparing ethylene glycol dimethacrylate, which comprises transesterification of ethylene glycol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising lithium amide (LiNH2) and lithium chloride (LiCl) is used as catalyst. The process of the invention makes it possible to prepare ethylene glycol dimethacrylate particularly inexpensively and in a very high purity.
摘要翻译: 本发明涉及一种制备乙二醇二甲基丙烯酸酯的方法,其包括在催化剂存在下乙二醇与甲基丙烯酸酯的酯交换反应,其中使用包含氨基化锂(LiNH 2)和氯化锂(LiCl)的组合作为催化剂 。 本发明的方法使得可以特别廉价并以非常高的纯度制备乙二醇二甲基丙烯酸酯。
-
公开(公告)号:US20130172598A1
公开(公告)日:2013-07-04
申请号:US12667538
申请日:2008-05-08
申请人: Joachim Knebel , Thorben Schuetz , Guido Protzmann , Harald Trauthwein , Guenther Lauster , Thomas Kehr , Gerhard Koelbl , Guenter Westhaeuser
发明人: Joachim Knebel , Thorben Schuetz , Guido Protzmann , Harald Trauthwein , Guenther Lauster , Thomas Kehr , Gerhard Koelbl , Guenter Westhaeuser
IPC分类号: C07C67/03
摘要: The present invention relates to a process for preparing ethylene glycol dimethacrylate, which comprises transesterification of ethylene glycol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising lithium amide (LiNH2) and lithium chloride (LiCl) is used as catalyst. The process of the invention makes it possible to prepare ethylene glycol dimethacrylate particularly inexpensively and in a very high purity.
摘要翻译: 本发明涉及一种制备乙二醇二甲基丙烯酸酯的方法,其包括在催化剂存在下乙二醇与甲基丙烯酸酯的酯交换反应,其中使用包含氨基化锂(LiNH 2)和氯化锂(LiCl)的组合作为催化剂 。 本发明的方法使得可以特别廉价并以非常高的纯度制备乙二醇二甲基丙烯酸酯。
-
公开(公告)号:US20100197955A1
公开(公告)日:2010-08-05
申请号:US12667822
申请日:2008-05-08
申请人: Joachim Knebel , Thorben Schuetz , Harald Trauthwein , Thomas Kehr , Guenther Lauster , Guido Protzmann , Gerhard Koelbl , Guenter Westhaeuser
发明人: Joachim Knebel , Thorben Schuetz , Harald Trauthwein , Thomas Kehr , Guenther Lauster , Guido Protzmann , Gerhard Koelbl , Guenter Westhaeuser
IPC分类号: C07C67/03
摘要: The present invention relates to a process for preparing butanediol dimethacrylates, which comprises the transesterification of butanediol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising at least one lithium compound and at least one calcium compound is used as catalyst, at least one of the compounds of lithium and/or of calcium is an oxide, a hydroxide, an alkoxide having from 1 to 4 carbon atoms or a carboxylate having from 1 to 4 carbon atoms and at least part of the reaction is carried out in the presence of an effective amount of water. The process of the invention makes a particularly inexpensive preparation of butanediol dimethacrylates having a very high purity possible.
摘要翻译: 本发明涉及制备丁二醇二甲基丙烯酸酯的方法,其包括在催化剂存在下丁二醇与甲基丙烯酸酯的酯交换反应,其中使用包含至少一种锂化合物和至少一种钙化合物的组合作为催化剂, 锂和/或钙的化合物中的至少一种是氧化物,氢氧化物,具有1至4个碳原子的醇盐或具有1至4个碳原子的羧酸盐,并且至少部分反应在 存在有效量的水。 本发明的方法使得可以特别廉价地制备具有非常高纯度的丁二醇二甲基丙烯酸酯。
-
-
-
-
-
-
-
-
-